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Engine swap not turning over

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I threw a rod on my original engine. So I ordered a motor from a wrecked car. After all of the parts were swapped over and engine installed it won't turn over. It will crank, but there is no fuel delivery. The engine will run if forced fuel into it. The shop suspects the DME. The fuel pump works and obviously the starter. I had some weird possible dme related issues at the track where the car would shut off under acceleration, but would turn back on with a turn of the key and a push of the clutch. '00 996 carerra.

Any suggestions?!

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If you have sparks (sounds like you have), your crank position sensor is good. Does it have a fuel pressure regulator on the fuel rail? Perhaps it's stuck open?

How about if you jump the fuel pump via the fuel pump relay (with the relay removed)?

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  • 2 weeks later...

No fuel pressure. Key set DME and all the rest was swapped over today. No turnover not even from the starter.

This is backwards from where we were. At least the car turned over without ignition before. I don't know where to go from here :(

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Check fuses C1 to C4 and E1. Try another key. Also try jumping the clutch switch. These are the simplest. Then you will need to check the starter relay and see if the DME is even grounding it to activate it. Are you sure the keys/immobilizer/DME set worked before?

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